| 1 | /* |
| 2 | * Copyright 2003-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.tools.javac.comp; |
| 27 | |
| 28 | import java.util.*; |
| 29 | import java.util.Set; |
| 30 | import javax.tools.JavaFileObject; |
| 31 | |
| 32 | import com.sun.tools.javac.code.*; |
| 33 | import com.sun.tools.javac.jvm.*; |
| 34 | import com.sun.tools.javac.tree.*; |
| 35 | import com.sun.tools.javac.util.*; |
| 36 | import com.sun.tools.javac.util.List; |
| 37 | |
| 38 | import com.sun.tools.javac.code.Type.*; |
| 39 | import com.sun.tools.javac.code.Symbol.*; |
| 40 | import com.sun.tools.javac.tree.JCTree.*; |
| 41 | |
| 42 | import static com.sun.tools.javac.code.Flags.*; |
| 43 | import static com.sun.tools.javac.code.Kinds.*; |
| 44 | import static com.sun.tools.javac.code.TypeTags.*; |
| 45 | import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition; |
| 46 | |
| 47 | /** This is the second phase of Enter, in which classes are completed |
| 48 | * by entering their members into the class scope using |
| 49 | * MemberEnter.complete(). See Enter for an overview. |
| 50 | * |
| 51 | * <p><b>This is NOT part of any API supported by Sun Microsystems. If |
| 52 | * you write code that depends on this, you do so at your own risk. |
| 53 | * This code and its internal interfaces are subject to change or |
| 54 | * deletion without notice.</b> |
| 55 | */ |
| 56 | public class MemberEnter extends JCTree.Visitor implements Completer { |
| 57 | protected static final Context.Key<MemberEnter> memberEnterKey = |
| 58 | new Context.Key<MemberEnter>(); |
| 59 | |
| 60 | /** A switch to determine whether we check for package/class conflicts |
| 61 | */ |
| 62 | final static boolean checkClash = true; |
| 63 | |
| 64 | private final Name.Table names; |
| 65 | private final Enter enter; |
| 66 | private final Log log; |
| 67 | private final Check chk; |
| 68 | private final Attr attr; |
| 69 | private final Symtab syms; |
| 70 | private final TreeMaker make; |
| 71 | private final ClassReader reader; |
| 72 | private final Todo todo; |
| 73 | private final Annotate annotate; |
| 74 | private final Types types; |
| 75 | private final Target target; |
| 76 | |
| 77 | private final boolean skipAnnotations; |
| 78 | |
| 79 | public static MemberEnter instance(Context context) { |
| 80 | MemberEnter instance = context.get(memberEnterKey); |
| 81 | if (instance == null) |
| 82 | instance = new MemberEnter(context); |
| 83 | return instance; |
| 84 | } |
| 85 | |
| 86 | protected MemberEnter(Context context) { |
| 87 | context.put(memberEnterKey, this); |
| 88 | names = Name.Table.instance(context); |
| 89 | enter = Enter.instance(context); |
| 90 | log = Log.instance(context); |
| 91 | chk = Check.instance(context); |
| 92 | attr = Attr.instance(context); |
| 93 | syms = Symtab.instance(context); |
| 94 | make = TreeMaker.instance(context); |
| 95 | reader = ClassReader.instance(context); |
| 96 | todo = Todo.instance(context); |
| 97 | annotate = Annotate.instance(context); |
| 98 | types = Types.instance(context); |
| 99 | target = Target.instance(context); |
| 100 | skipAnnotations = |
| 101 | Options.instance(context).get("skipAnnotations") != null; |
| 102 | } |
| 103 | |
| 104 | /** A queue for classes whose members still need to be entered into the |
| 105 | * symbol table. |
| 106 | */ |
| 107 | ListBuffer<Env<AttrContext>> halfcompleted = new ListBuffer<Env<AttrContext>>(); |
| 108 | |
| 109 | /** Set to true only when the first of a set of classes is |
| 110 | * processed from the halfcompleted queue. |
| 111 | */ |
| 112 | boolean isFirst = true; |
| 113 | |
| 114 | /** A flag to disable completion from time to time during member |
| 115 | * enter, as we only need to look up types. This avoids |
| 116 | * unnecessarily deep recursion. |
| 117 | */ |
| 118 | boolean completionEnabled = true; |
| 119 | |
| 120 | /* ---------- Processing import clauses ---------------- |
| 121 | */ |
| 122 | |
| 123 | /** Import all classes of a class or package on demand. |
| 124 | * @param pos Position to be used for error reporting. |
| 125 | * @param tsym The class or package the members of which are imported. |
| 126 | * @param toScope The (import) scope in which imported classes |
| 127 | * are entered. |
| 128 | */ |
| 129 | private void importAll(int pos, |
| 130 | final TypeSymbol tsym, |
| 131 | Env<AttrContext> env) { |
| 132 | // Check that packages imported from exist (JLS ???). |
| 133 | if (tsym.kind == PCK && tsym.members().elems == null && !tsym.exists()) { |
| 134 | // If we can't find java.lang, exit immediately. |
| 135 | if (((PackageSymbol)tsym).fullname.equals(names.java_lang)) { |
| 136 | JCDiagnostic msg = JCDiagnostic.fragment("fatal.err.no.java.lang"); |
| 137 | throw new FatalError(msg); |
| 138 | } else { |
| 139 | log.error(pos, "doesnt.exist", tsym); |
| 140 | } |
| 141 | } |
| 142 | final Scope fromScope = tsym.members(); |
| 143 | final Scope toScope = env.toplevel.starImportScope; |
| 144 | for (Scope.Entry e = fromScope.elems; e != null; e = e.sibling) { |
| 145 | if (e.sym.kind == TYP && !toScope.includes(e.sym)) |
| 146 | toScope.enter(e.sym, fromScope); |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | /** Import all static members of a class or package on demand. |
| 151 | * @param pos Position to be used for error reporting. |
| 152 | * @param tsym The class or package the members of which are imported. |
| 153 | * @param toScope The (import) scope in which imported classes |
| 154 | * are entered. |
| 155 | */ |
| 156 | private void importStaticAll(int pos, |
| 157 | final TypeSymbol tsym, |
| 158 | Env<AttrContext> env) { |
| 159 | final JavaFileObject sourcefile = env.toplevel.sourcefile; |
| 160 | final Scope toScope = env.toplevel.starImportScope; |
| 161 | final PackageSymbol packge = env.toplevel.packge; |
| 162 | final TypeSymbol origin = tsym; |
| 163 | |
| 164 | // enter imported types immediately |
| 165 | new Object() { |
| 166 | Set<Symbol> processed = new HashSet<Symbol>(); |
| 167 | void importFrom(TypeSymbol tsym) { |
| 168 | if (tsym == null || !processed.add(tsym)) |
| 169 | return; |
| 170 | |
| 171 | // also import inherited names |
| 172 | importFrom(types.supertype(tsym.type).tsym); |
| 173 | for (Type t : types.interfaces(tsym.type)) |
| 174 | importFrom(t.tsym); |
| 175 | |
| 176 | final Scope fromScope = tsym.members(); |
| 177 | for (Scope.Entry e = fromScope.elems; e != null; e = e.sibling) { |
| 178 | Symbol sym = e.sym; |
| 179 | if (sym.kind == TYP && |
| 180 | (sym.flags() & STATIC) != 0 && |
| 181 | staticImportAccessible(sym, packge) && |
| 182 | sym.isMemberOf(origin, types) && |
| 183 | !toScope.includes(sym)) |
| 184 | toScope.enter(sym, fromScope, origin.members()); |
| 185 | } |
| 186 | } |
| 187 | }.importFrom(tsym); |
| 188 | |
| 189 | // enter non-types before annotations that might use them |
| 190 | annotate.earlier(new Annotate.Annotator() { |
| 191 | Set<Symbol> processed = new HashSet<Symbol>(); |
| 192 | |
| 193 | public String toString() { |
| 194 | return "import static " + tsym + ".*" + " in " + sourcefile; |
| 195 | } |
| 196 | void importFrom(TypeSymbol tsym) { |
| 197 | if (tsym == null || !processed.add(tsym)) |
| 198 | return; |
| 199 | |
| 200 | // also import inherited names |
| 201 | importFrom(types.supertype(tsym.type).tsym); |
| 202 | for (Type t : types.interfaces(tsym.type)) |
| 203 | importFrom(t.tsym); |
| 204 | |
| 205 | final Scope fromScope = tsym.members(); |
| 206 | for (Scope.Entry e = fromScope.elems; e != null; e = e.sibling) { |
| 207 | Symbol sym = e.sym; |
| 208 | if (sym.isStatic() && sym.kind != TYP && |
| 209 | staticImportAccessible(sym, packge) && |
| 210 | !toScope.includes(sym) && |
| 211 | sym.isMemberOf(origin, types)) { |
| 212 | toScope.enter(sym, fromScope, origin.members()); |
| 213 | } |
| 214 | } |
| 215 | } |
| 216 | public void enterAnnotation() { |
| 217 | importFrom(tsym); |
| 218 | } |
| 219 | }); |
| 220 | } |
| 221 | |
| 222 | // is the sym accessible everywhere in packge? |
| 223 | boolean staticImportAccessible(Symbol sym, PackageSymbol packge) { |
| 224 | int flags = (int)(sym.flags() & AccessFlags); |
| 225 | switch (flags) { |
| 226 | default: |
| 227 | case PUBLIC: |
| 228 | return true; |
| 229 | case PRIVATE: |
| 230 | return false; |
| 231 | case 0: |
| 232 | case PROTECTED: |
| 233 | return sym.packge() == packge; |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | /** Import statics types of a given name. Non-types are handled in Attr. |
| 238 | * @param pos Position to be used for error reporting. |
| 239 | * @param tsym The class from which the name is imported. |
| 240 | * @param name The (simple) name being imported. |
| 241 | * @param env The environment containing the named import |
| 242 | * scope to add to. |
| 243 | */ |
| 244 | private void importNamedStatic(final DiagnosticPosition pos, |
| 245 | final TypeSymbol tsym, |
| 246 | final Name name, |
| 247 | final Env<AttrContext> env) { |
| 248 | if (tsym.kind != TYP) { |
| 249 | log.error(pos, "static.imp.only.classes.and.interfaces"); |
| 250 | return; |
| 251 | } |
| 252 | |
| 253 | final Scope toScope = env.toplevel.namedImportScope; |
| 254 | final PackageSymbol packge = env.toplevel.packge; |
| 255 | final TypeSymbol origin = tsym; |
| 256 | |
| 257 | // enter imported types immediately |
| 258 | new Object() { |
| 259 | Set<Symbol> processed = new HashSet<Symbol>(); |
| 260 | void importFrom(TypeSymbol tsym) { |
| 261 | if (tsym == null || !processed.add(tsym)) |
| 262 | return; |
| 263 | |
| 264 | // also import inherited names |
| 265 | importFrom(types.supertype(tsym.type).tsym); |
| 266 | for (Type t : types.interfaces(tsym.type)) |
| 267 | importFrom(t.tsym); |
| 268 | |
| 269 | for (Scope.Entry e = tsym.members().lookup(name); |
| 270 | e.scope != null; |
| 271 | e = e.next()) { |
| 272 | Symbol sym = e.sym; |
| 273 | if (sym.isStatic() && |
| 274 | sym.kind == TYP && |
| 275 | staticImportAccessible(sym, packge) && |
| 276 | sym.isMemberOf(origin, types) && |
| 277 | chk.checkUniqueStaticImport(pos, sym, toScope)) |
| 278 | toScope.enter(sym, sym.owner.members(), origin.members()); |
| 279 | } |
| 280 | } |
| 281 | }.importFrom(tsym); |
| 282 | |
| 283 | // enter non-types before annotations that might use them |
| 284 | annotate.earlier(new Annotate.Annotator() { |
| 285 | Set<Symbol> processed = new HashSet<Symbol>(); |
| 286 | boolean found = false; |
| 287 | |
| 288 | public String toString() { |
| 289 | return "import static " + tsym + "." + name; |
| 290 | } |
| 291 | void importFrom(TypeSymbol tsym) { |
| 292 | if (tsym == null || !processed.add(tsym)) |
| 293 | return; |
| 294 | |
| 295 | // also import inherited names |
| 296 | importFrom(types.supertype(tsym.type).tsym); |
| 297 | for (Type t : types.interfaces(tsym.type)) |
| 298 | importFrom(t.tsym); |
| 299 | |
| 300 | for (Scope.Entry e = tsym.members().lookup(name); |
| 301 | e.scope != null; |
| 302 | e = e.next()) { |
| 303 | Symbol sym = e.sym; |
| 304 | if (sym.isStatic() && |
| 305 | staticImportAccessible(sym, packge) && |
| 306 | sym.isMemberOf(origin, types)) { |
| 307 | found = true; |
| 308 | if (sym.kind == MTH || |
| 309 | sym.kind != TYP && chk.checkUniqueStaticImport(pos, sym, toScope)) |
| 310 | toScope.enter(sym, sym.owner.members(), origin.members()); |
| 311 | } |
| 312 | } |
| 313 | } |
| 314 | public void enterAnnotation() { |
| 315 | JavaFileObject prev = log.useSource(env.toplevel.sourcefile); |
| 316 | try { |
| 317 | importFrom(tsym); |
| 318 | if (!found) { |
| 319 | log.error(pos, "cant.resolve.location", |
| 320 | JCDiagnostic.fragment("kindname.static"), |
| 321 | name, "", "", Resolve.typeKindName(tsym.type), |
| 322 | tsym.type); |
| 323 | } |
| 324 | } finally { |
| 325 | log.useSource(prev); |
| 326 | } |
| 327 | } |
| 328 | }); |
| 329 | } |
| 330 | /** Import given class. |
| 331 | * @param pos Position to be used for error reporting. |
| 332 | * @param tsym The class to be imported. |
| 333 | * @param env The environment containing the named import |
| 334 | * scope to add to. |
| 335 | */ |
| 336 | private void importNamed(DiagnosticPosition pos, Symbol tsym, Env<AttrContext> env) { |
| 337 | if (tsym.kind == TYP && |
| 338 | chk.checkUniqueImport(pos, tsym, env.toplevel.namedImportScope)) |
| 339 | env.toplevel.namedImportScope.enter(tsym, tsym.owner.members()); |
| 340 | } |
| 341 | |
| 342 | /** Construct method type from method signature. |
| 343 | * @param typarams The method's type parameters. |
| 344 | * @param params The method's value parameters. |
| 345 | * @param res The method's result type, |
| 346 | * null if it is a constructor. |
| 347 | * @param thrown The method's thrown exceptions. |
| 348 | * @param env The method's (local) environment. |
| 349 | */ |
| 350 | Type signature(List<JCTypeParameter> typarams, |
| 351 | List<JCVariableDecl> params, |
| 352 | JCTree res, |
| 353 | List<JCExpression> thrown, |
| 354 | Env<AttrContext> env) { |
| 355 | |
| 356 | // Enter and attribute type parameters. |
| 357 | List<Type> tvars = enter.classEnter(typarams, env); |
| 358 | attr.attribTypeVariables(typarams, env); |
| 359 | |
| 360 | // Enter and attribute value parameters. |
| 361 | ListBuffer<Type> argbuf = new ListBuffer<Type>(); |
| 362 | for (List<JCVariableDecl> l = params; l.nonEmpty(); l = l.tail) { |
| 363 | memberEnter(l.head, env); |
| 364 | argbuf.append(l.head.vartype.type); |
| 365 | } |
| 366 | |
| 367 | // Attribute result type, if one is given. |
| 368 | Type restype = res == null ? syms.voidType : attr.attribType(res, env); |
| 369 | |
| 370 | // Attribute thrown exceptions. |
| 371 | ListBuffer<Type> thrownbuf = new ListBuffer<Type>(); |
| 372 | for (List<JCExpression> l = thrown; l.nonEmpty(); l = l.tail) { |
| 373 | Type exc = attr.attribType(l.head, env); |
| 374 | if (exc.tag != TYPEVAR) |
| 375 | exc = chk.checkClassType(l.head.pos(), exc); |
| 376 | thrownbuf.append(exc); |
| 377 | } |
| 378 | Type mtype = new MethodType(argbuf.toList(), |
| 379 | restype, |
| 380 | thrownbuf.toList(), |
| 381 | syms.methodClass); |
| 382 | return tvars.isEmpty() ? mtype : new ForAll(tvars, mtype); |
| 383 | } |
| 384 | |
| 385 | /* ******************************************************************** |
| 386 | * Visitor methods for member enter |
| 387 | *********************************************************************/ |
| 388 | |
| 389 | /** Visitor argument: the current environment |
| 390 | */ |
| 391 | protected Env<AttrContext> env; |
| 392 | |
| 393 | /** Enter field and method definitions and process import |
| 394 | * clauses, catching any completion failure exceptions. |
| 395 | */ |
| 396 | protected void memberEnter(JCTree tree, Env<AttrContext> env) { |
| 397 | Env<AttrContext> prevEnv = this.env; |
| 398 | try { |
| 399 | this.env = env; |
| 400 | tree.accept(this); |
| 401 | } catch (CompletionFailure ex) { |
| 402 | chk.completionError(tree.pos(), ex); |
| 403 | } finally { |
| 404 | this.env = prevEnv; |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | /** Enter members from a list of trees. |
| 409 | */ |
| 410 | void memberEnter(List<? extends JCTree> trees, Env<AttrContext> env) { |
| 411 | for (List<? extends JCTree> l = trees; l.nonEmpty(); l = l.tail) |
| 412 | memberEnter(l.head, env); |
| 413 | } |
| 414 | |
| 415 | /** Enter members for a class. |
| 416 | */ |
| 417 | void finishClass(JCClassDecl tree, Env<AttrContext> env) { |
| 418 | if ((tree.mods.flags & Flags.ENUM) != 0 && |
| 419 | (types.supertype(tree.sym.type).tsym.flags() & Flags.ENUM) == 0) { |
| 420 | addEnumMembers(tree, env); |
| 421 | } |
| 422 | memberEnter(tree.defs, env); |
| 423 | } |
| 424 | |
| 425 | /** Add the implicit members for an enum type |
| 426 | * to the symbol table. |
| 427 | */ |
| 428 | private void addEnumMembers(JCClassDecl tree, Env<AttrContext> env) { |
| 429 | JCExpression valuesType = make.Type(new ArrayType(tree.sym.type, syms.arrayClass)); |
| 430 | |
| 431 | // public static T[] values() { return ???; } |
| 432 | JCMethodDecl values = make. |
| 433 | MethodDef(make.Modifiers(Flags.PUBLIC|Flags.STATIC), |
| 434 | names.values, |
| 435 | valuesType, |
| 436 | List.<JCTypeParameter>nil(), |
| 437 | List.<JCVariableDecl>nil(), |
| 438 | List.<JCExpression>nil(), // thrown |
| 439 | null, //make.Block(0, Tree.emptyList.prepend(make.Return(make.Ident(names._null)))), |
| 440 | null); |
| 441 | memberEnter(values, env); |
| 442 | |
| 443 | // public static T valueOf(String name) { return ???; } |
| 444 | JCMethodDecl valueOf = make. |
| 445 | MethodDef(make.Modifiers(Flags.PUBLIC|Flags.STATIC), |
| 446 | names.valueOf, |
| 447 | make.Type(tree.sym.type), |
| 448 | List.<JCTypeParameter>nil(), |
| 449 | List.of(make.VarDef(make.Modifiers(Flags.PARAMETER), |
| 450 | names.fromString("name"), |
| 451 | make.Type(syms.stringType), null)), |
| 452 | List.<JCExpression>nil(), // thrown |
| 453 | null, //make.Block(0, Tree.emptyList.prepend(make.Return(make.Ident(names._null)))), |
| 454 | null); |
| 455 | memberEnter(valueOf, env); |
| 456 | |
| 457 | // the remaining members are for bootstrapping only |
| 458 | if (!target.compilerBootstrap(tree.sym)) return; |
| 459 | |
| 460 | // public final int ordinal() { return ???; } |
| 461 | JCMethodDecl ordinal = make.at(tree.pos). |
| 462 | MethodDef(make.Modifiers(Flags.PUBLIC|Flags.FINAL), |
| 463 | names.ordinal, |
| 464 | make.Type(syms.intType), |
| 465 | List.<JCTypeParameter>nil(), |
| 466 | List.<JCVariableDecl>nil(), |
| 467 | List.<JCExpression>nil(), |
| 468 | null, |
| 469 | null); |
| 470 | memberEnter(ordinal, env); |
| 471 | |
| 472 | // public final String name() { return ???; } |
| 473 | JCMethodDecl name = make. |
| 474 | MethodDef(make.Modifiers(Flags.PUBLIC|Flags.FINAL), |
| 475 | names._name, |
| 476 | make.Type(syms.stringType), |
| 477 | List.<JCTypeParameter>nil(), |
| 478 | List.<JCVariableDecl>nil(), |
| 479 | List.<JCExpression>nil(), |
| 480 | null, |
| 481 | null); |
| 482 | memberEnter(name, env); |
| 483 | |
| 484 | // public int compareTo(E other) { return ???; } |
| 485 | MethodSymbol compareTo = new |
| 486 | MethodSymbol(Flags.PUBLIC, |
| 487 | names.compareTo, |
| 488 | new MethodType(List.of(tree.sym.type), |
| 489 | syms.intType, |
| 490 | List.<Type>nil(), |
| 491 | syms.methodClass), |
| 492 | tree.sym); |
| 493 | memberEnter(make.MethodDef(compareTo, null), env); |
| 494 | } |
| 495 | |
| 496 | public void visitTopLevel(JCCompilationUnit tree) { |
| 497 | if (tree.starImportScope.elems != null) { |
| 498 | // we must have already processed this toplevel |
| 499 | return; |
| 500 | } |
| 501 | |
| 502 | // check that no class exists with same fully qualified name as |
| 503 | // toplevel package |
| 504 | if (checkClash && tree.pid != null) { |
| 505 | Symbol p = tree.packge; |
| 506 | while (p.owner != syms.rootPackage) { |
| 507 | p.owner.complete(); // enter all class members of p |
| 508 | if (syms.classes.get(p.getQualifiedName()) != null) { |
| 509 | log.error(tree.pos, |
| 510 | "pkg.clashes.with.class.of.same.name", |
| 511 | p); |
| 512 | } |
| 513 | p = p.owner; |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | // process package annotations |
| 518 | annotateLater(tree.packageAnnotations, env, tree.packge); |
| 519 | |
| 520 | // Import-on-demand java.lang. |
| 521 | importAll(tree.pos, reader.enterPackage(names.java_lang), env); |
| 522 | |
| 523 | // Process all import clauses. |
| 524 | memberEnter(tree.defs, env); |
| 525 | } |
| 526 | |
| 527 | // process the non-static imports and the static imports of types. |
| 528 | public void visitImport(JCImport tree) { |
| 529 | JCTree imp = tree.qualid; |
| 530 | Name name = TreeInfo.name(imp); |
| 531 | TypeSymbol p; |
| 532 | |
| 533 | // Create a local environment pointing to this tree to disable |
| 534 | // effects of other imports in Resolve.findGlobalType |
| 535 | Env<AttrContext> localEnv = env.dup(tree); |
| 536 | |
| 537 | // Attribute qualifying package or class. |
| 538 | JCFieldAccess s = (JCFieldAccess) imp; |
| 539 | p = attr. |
| 540 | attribTree(s.selected, |
| 541 | localEnv, |
| 542 | tree.staticImport ? TYP : (TYP | PCK), |
| 543 | Type.noType).tsym; |
| 544 | if (name == names.asterisk) { |
| 545 | // Import on demand. |
| 546 | chk.checkCanonical(s.selected); |
| 547 | if (tree.staticImport) |
| 548 | importStaticAll(tree.pos, p, env); |
| 549 | else |
| 550 | importAll(tree.pos, p, env); |
| 551 | } else { |
| 552 | // Named type import. |
| 553 | if (tree.staticImport) { |
| 554 | importNamedStatic(tree.pos(), p, name, localEnv); |
| 555 | chk.checkCanonical(s.selected); |
| 556 | } else { |
| 557 | TypeSymbol c = attribImportType(imp, localEnv).tsym; |
| 558 | chk.checkCanonical(imp); |
| 559 | importNamed(tree.pos(), c, env); |
| 560 | } |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | public void visitMethodDef(JCMethodDecl tree) { |
| 565 | Scope enclScope = enter.enterScope(env); |
| 566 | MethodSymbol m = new MethodSymbol(0, tree.name, null, enclScope.owner); |
| 567 | m.flags_field = chk.checkFlags(tree.pos(), tree.mods.flags, m, tree); |
| 568 | tree.sym = m; |
| 569 | Env<AttrContext> localEnv = methodEnv(tree, env); |
| 570 | |
| 571 | // Compute the method type |
| 572 | m.type = signature(tree.typarams, tree.params, |
| 573 | tree.restype, tree.thrown, |
| 574 | localEnv); |
| 575 | |
| 576 | // Set m.params |
| 577 | ListBuffer<VarSymbol> params = new ListBuffer<VarSymbol>(); |
| 578 | JCVariableDecl lastParam = null; |
| 579 | for (List<JCVariableDecl> l = tree.params; l.nonEmpty(); l = l.tail) { |
| 580 | JCVariableDecl param = lastParam = l.head; |
| 581 | assert param.sym != null; |
| 582 | params.append(param.sym); |
| 583 | } |
| 584 | m.params = params.toList(); |
| 585 | |
| 586 | // mark the method varargs, if necessary |
| 587 | if (lastParam != null && (lastParam.mods.flags & Flags.VARARGS) != 0) |
| 588 | m.flags_field |= Flags.VARARGS; |
| 589 | |
| 590 | localEnv.info.scope.leave(); |
| 591 | if (chk.checkUnique(tree.pos(), m, enclScope)) { |
| 592 | enclScope.enter(m); |
| 593 | } |
| 594 | annotateLater(tree.mods.annotations, localEnv, m); |
| 595 | if (tree.defaultValue != null) |
| 596 | annotateDefaultValueLater(tree.defaultValue, localEnv, m); |
| 597 | } |
| 598 | |
| 599 | /** Create a fresh environment for method bodies. |
| 600 | * @param tree The method definition. |
| 601 | * @param env The environment current outside of the method definition. |
| 602 | */ |
| 603 | Env<AttrContext> methodEnv(JCMethodDecl tree, Env<AttrContext> env) { |
| 604 | Env<AttrContext> localEnv = |
| 605 | env.dup(tree, env.info.dup(env.info.scope.dupUnshared())); |
| 606 | localEnv.enclMethod = tree; |
| 607 | localEnv.info.scope.owner = tree.sym; |
| 608 | if ((tree.mods.flags & STATIC) != 0) localEnv.info.staticLevel++; |
| 609 | return localEnv; |
| 610 | } |
| 611 | |
| 612 | public void visitVarDef(JCVariableDecl tree) { |
| 613 | Env<AttrContext> localEnv = env; |
| 614 | if ((tree.mods.flags & STATIC) != 0 || |
| 615 | (env.info.scope.owner.flags() & INTERFACE) != 0) { |
| 616 | localEnv = env.dup(tree, env.info.dup()); |
| 617 | localEnv.info.staticLevel++; |
| 618 | } |
| 619 | attr.attribType(tree.vartype, localEnv); |
| 620 | Scope enclScope = enter.enterScope(env); |
| 621 | VarSymbol v = |
| 622 | new VarSymbol(0, tree.name, tree.vartype.type, enclScope.owner); |
| 623 | v.flags_field = chk.checkFlags(tree.pos(), tree.mods.flags, v, tree); |
| 624 | tree.sym = v; |
| 625 | if (tree.init != null) { |
| 626 | v.flags_field |= HASINIT; |
| 627 | if ((v.flags_field & FINAL) != 0 && tree.init.getTag() != JCTree.NEWCLASS) |
| 628 | v.setLazyConstValue(initEnv(tree, env), log, attr, tree.init); |
| 629 | } |
| 630 | if (chk.checkUnique(tree.pos(), v, enclScope)) { |
| 631 | chk.checkTransparentVar(tree.pos(), v, enclScope); |
| 632 | enclScope.enter(v); |
| 633 | } |
| 634 | annotateLater(tree.mods.annotations, localEnv, v); |
| 635 | v.pos = tree.pos; |
| 636 | } |
| 637 | |
| 638 | /** Create a fresh environment for a variable's initializer. |
| 639 | * If the variable is a field, the owner of the environment's scope |
| 640 | * is be the variable itself, otherwise the owner is the method |
| 641 | * enclosing the variable definition. |
| 642 | * |
| 643 | * @param tree The variable definition. |
| 644 | * @param env The environment current outside of the variable definition. |
| 645 | */ |
| 646 | Env<AttrContext> initEnv(JCVariableDecl tree, Env<AttrContext> env) { |
| 647 | Env<AttrContext> localEnv = env.dupto(new AttrContextEnv(tree, env.info.dup())); |
| 648 | if (tree.sym.owner.kind == TYP) { |
| 649 | localEnv.info.scope = new Scope.DelegatedScope(env.info.scope); |
| 650 | localEnv.info.scope.owner = tree.sym; |
| 651 | } |
| 652 | if ((tree.mods.flags & STATIC) != 0 || |
| 653 | (env.enclClass.sym.flags() & INTERFACE) != 0) |
| 654 | localEnv.info.staticLevel++; |
| 655 | return localEnv; |
| 656 | } |
| 657 | |
| 658 | /** Default member enter visitor method: do nothing |
| 659 | */ |
| 660 | public void visitTree(JCTree tree) { |
| 661 | } |
| 662 | |
| 663 | |
| 664 | public void visitErroneous(JCErroneous tree) { |
| 665 | memberEnter(tree.errs, env); |
| 666 | } |
| 667 | |
| 668 | public Env<AttrContext> getMethodEnv(JCMethodDecl tree, Env<AttrContext> env) { |
| 669 | Env<AttrContext> mEnv = methodEnv(tree, env); |
| 670 | mEnv.info.lint = mEnv.info.lint.augment(tree.sym.attributes_field, tree.sym.flags()); |
| 671 | for (List<JCTypeParameter> l = tree.typarams; l.nonEmpty(); l = l.tail) |
| 672 | mEnv.info.scope.enterIfAbsent(l.head.type.tsym); |
| 673 | for (List<JCVariableDecl> l = tree.params; l.nonEmpty(); l = l.tail) |
| 674 | mEnv.info.scope.enterIfAbsent(l.head.sym); |
| 675 | return mEnv; |
| 676 | } |
| 677 | |
| 678 | public Env<AttrContext> getInitEnv(JCVariableDecl tree, Env<AttrContext> env) { |
| 679 | Env<AttrContext> iEnv = initEnv(tree, env); |
| 680 | return iEnv; |
| 681 | } |
| 682 | |
| 683 | /* ******************************************************************** |
| 684 | * Type completion |
| 685 | *********************************************************************/ |
| 686 | |
| 687 | Type attribImportType(JCTree tree, Env<AttrContext> env) { |
| 688 | assert completionEnabled; |
| 689 | try { |
| 690 | // To prevent deep recursion, suppress completion of some |
| 691 | // types. |
| 692 | completionEnabled = false; |
| 693 | return attr.attribType(tree, env); |
| 694 | } finally { |
| 695 | completionEnabled = true; |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | /* ******************************************************************** |
| 700 | * Annotation processing |
| 701 | *********************************************************************/ |
| 702 | |
| 703 | /** Queue annotations for later processing. */ |
| 704 | void annotateLater(final List<JCAnnotation> annotations, |
| 705 | final Env<AttrContext> localEnv, |
| 706 | final Symbol s) { |
| 707 | if (annotations.isEmpty()) return; |
| 708 | if (s.kind != PCK) s.attributes_field = null; // mark it incomplete for now |
| 709 | annotate.later(new Annotate.Annotator() { |
| 710 | public String toString() { |
| 711 | return "annotate " + annotations + " onto " + s + " in " + s.owner; |
| 712 | } |
| 713 | public void enterAnnotation() { |
| 714 | assert s.kind == PCK || s.attributes_field == null; |
| 715 | JavaFileObject prev = log.useSource(localEnv.toplevel.sourcefile); |
| 716 | try { |
| 717 | if (s.attributes_field != null && |
| 718 | s.attributes_field.nonEmpty() && |
| 719 | annotations.nonEmpty()) |
| 720 | log.error(annotations.head.pos, |
| 721 | "already.annotated", |
| 722 | Resolve.kindName(s), s); |
| 723 | enterAnnotations(annotations, localEnv, s); |
| 724 | } finally { |
| 725 | log.useSource(prev); |
| 726 | } |
| 727 | } |
| 728 | }); |
| 729 | } |
| 730 | |
| 731 | /** |
| 732 | * Check if a list of annotations contains a reference to |
| 733 | * java.lang.Deprecated. |
| 734 | **/ |
| 735 | private boolean hasDeprecatedAnnotation(List<JCAnnotation> annotations) { |
| 736 | for (List<JCAnnotation> al = annotations; al.nonEmpty(); al = al.tail) { |
| 737 | JCAnnotation a = al.head; |
| 738 | if (a.annotationType.type == syms.deprecatedType && a.args.isEmpty()) |
| 739 | return true; |
| 740 | } |
| 741 | return false; |
| 742 | } |
| 743 | |
| 744 | |
| 745 | /** Enter a set of annotations. */ |
| 746 | private void enterAnnotations(List<JCAnnotation> annotations, |
| 747 | Env<AttrContext> env, |
| 748 | Symbol s) { |
| 749 | ListBuffer<Attribute.Compound> buf = |
| 750 | new ListBuffer<Attribute.Compound>(); |
| 751 | Set<TypeSymbol> annotated = new HashSet<TypeSymbol>(); |
| 752 | if (!skipAnnotations) |
| 753 | for (List<JCAnnotation> al = annotations; al.nonEmpty(); al = al.tail) { |
| 754 | JCAnnotation a = al.head; |
| 755 | Attribute.Compound c = annotate.enterAnnotation(a, |
| 756 | syms.annotationType, |
| 757 | env); |
| 758 | if (c == null) continue; |
| 759 | buf.append(c); |
| 760 | // Note: @Deprecated has no effect on local variables and parameters |
| 761 | if (!c.type.isErroneous() |
| 762 | && s.owner.kind != MTH |
| 763 | && types.isSameType(c.type, syms.deprecatedType)) |
| 764 | s.flags_field |= Flags.DEPRECATED; |
| 765 | if (!annotated.add(a.type.tsym)) |
| 766 | log.error(a.pos, "duplicate.annotation"); |
| 767 | } |
| 768 | s.attributes_field = buf.toList(); |
| 769 | } |
| 770 | |
| 771 | /** Queue processing of an attribute default value. */ |
| 772 | void annotateDefaultValueLater(final JCExpression defaultValue, |
| 773 | final Env<AttrContext> localEnv, |
| 774 | final MethodSymbol m) { |
| 775 | annotate.later(new Annotate.Annotator() { |
| 776 | public String toString() { |
| 777 | return "annotate " + m.owner + "." + |
| 778 | m + " default " + defaultValue; |
| 779 | } |
| 780 | public void enterAnnotation() { |
| 781 | JavaFileObject prev = log.useSource(localEnv.toplevel.sourcefile); |
| 782 | try { |
| 783 | enterDefaultValue(defaultValue, localEnv, m); |
| 784 | } finally { |
| 785 | log.useSource(prev); |
| 786 | } |
| 787 | } |
| 788 | }); |
| 789 | } |
| 790 | |
| 791 | /** Enter a default value for an attribute method. */ |
| 792 | private void enterDefaultValue(final JCExpression defaultValue, |
| 793 | final Env<AttrContext> localEnv, |
| 794 | final MethodSymbol m) { |
| 795 | m.defaultValue = annotate.enterAttributeValue(m.type.getReturnType(), |
| 796 | defaultValue, |
| 797 | localEnv); |
| 798 | } |
| 799 | |
| 800 | /* ******************************************************************** |
| 801 | * Source completer |
| 802 | *********************************************************************/ |
| 803 | |
| 804 | /** Complete entering a class. |
| 805 | * @param sym The symbol of the class to be completed. |
| 806 | */ |
| 807 | public void complete(Symbol sym) throws CompletionFailure { |
| 808 | // Suppress some (recursive) MemberEnter invocations |
| 809 | if (!completionEnabled) { |
| 810 | // Re-install same completer for next time around and return. |
| 811 | assert (sym.flags() & Flags.COMPOUND) == 0; |
| 812 | sym.completer = this; |
| 813 | return; |
| 814 | } |
| 815 | |
| 816 | ClassSymbol c = (ClassSymbol)sym; |
| 817 | ClassType ct = (ClassType)c.type; |
| 818 | Env<AttrContext> env = enter.typeEnvs.get(c); |
| 819 | JCClassDecl tree = (JCClassDecl)env.tree; |
| 820 | boolean wasFirst = isFirst; |
| 821 | isFirst = false; |
| 822 | |
| 823 | JavaFileObject prev = log.useSource(env.toplevel.sourcefile); |
| 824 | try { |
| 825 | // Save class environment for later member enter (2) processing. |
| 826 | halfcompleted.append(env); |
| 827 | |
| 828 | // If this is a toplevel-class, make sure any preceding import |
| 829 | // clauses have been seen. |
| 830 | if (c.owner.kind == PCK) { |
| 831 | memberEnter(env.toplevel, env.enclosing(JCTree.TOPLEVEL)); |
| 832 | todo.append(env); |
| 833 | } |
| 834 | |
| 835 | // Mark class as not yet attributed. |
| 836 | c.flags_field |= UNATTRIBUTED; |
| 837 | |
| 838 | if (c.owner.kind == TYP) |
| 839 | c.owner.complete(); |
| 840 | |
| 841 | // create an environment for evaluating the base clauses |
| 842 | Env<AttrContext> baseEnv = baseEnv(tree, env); |
| 843 | |
| 844 | // Determine supertype. |
| 845 | Type supertype = |
| 846 | (tree.extending != null) |
| 847 | ? attr.attribBase(tree.extending, baseEnv, true, false, true) |
| 848 | : ((tree.mods.flags & Flags.ENUM) != 0 && !target.compilerBootstrap(c)) |
| 849 | ? attr.attribBase(enumBase(tree.pos, c), baseEnv, |
| 850 | true, false, false) |
| 851 | : (c.fullname == names.java_lang_Object) |
| 852 | ? Type.noType |
| 853 | : syms.objectType; |
| 854 | ct.supertype_field = supertype; |
| 855 | |
| 856 | // Determine interfaces. |
| 857 | ListBuffer<Type> interfaces = new ListBuffer<Type>(); |
| 858 | Set<Type> interfaceSet = new HashSet<Type>(); |
| 859 | List<JCExpression> interfaceTrees = tree.implementing; |
| 860 | if ((tree.mods.flags & Flags.ENUM) != 0 && target.compilerBootstrap(c)) { |
| 861 | // add interface Comparable<T> |
| 862 | interfaceTrees = |
| 863 | interfaceTrees.prepend(make.Type(new ClassType(syms.comparableType.getEnclosingType(), |
| 864 | List.of(c.type), |
| 865 | syms.comparableType.tsym))); |
| 866 | // add interface Serializable |
| 867 | interfaceTrees = |
| 868 | interfaceTrees.prepend(make.Type(syms.serializableType)); |
| 869 | } |
| 870 | for (JCExpression iface : interfaceTrees) { |
| 871 | Type i = attr.attribBase(iface, baseEnv, false, true, true); |
| 872 | if (i.tag == CLASS) { |
| 873 | interfaces.append(i); |
| 874 | chk.checkNotRepeated(iface.pos(), types.erasure(i), interfaceSet); |
| 875 | } |
| 876 | } |
| 877 | if ((c.flags_field & ANNOTATION) != 0) |
| 878 | ct.interfaces_field = List.of(syms.annotationType); |
| 879 | else |
| 880 | ct.interfaces_field = interfaces.toList(); |
| 881 | |
| 882 | if (c.fullname == names.java_lang_Object) { |
| 883 | if (tree.extending != null) { |
| 884 | chk.checkNonCyclic(tree.extending.pos(), |
| 885 | supertype); |
| 886 | ct.supertype_field = Type.noType; |
| 887 | } |
| 888 | else if (tree.implementing.nonEmpty()) { |
| 889 | chk.checkNonCyclic(tree.implementing.head.pos(), |
| 890 | ct.interfaces_field.head); |
| 891 | ct.interfaces_field = List.nil(); |
| 892 | } |
| 893 | } |
| 894 | |
| 895 | // Annotations. |
| 896 | // In general, we cannot fully process annotations yet, but we |
| 897 | // can attribute the annotation types and then check to see if the |
| 898 | // @Deprecated annotation is present. |
| 899 | attr.attribAnnotationTypes(tree.mods.annotations, baseEnv); |
| 900 | if (hasDeprecatedAnnotation(tree.mods.annotations)) |
| 901 | c.flags_field |= DEPRECATED; |
| 902 | annotateLater(tree.mods.annotations, baseEnv, c); |
| 903 | |
| 904 | attr.attribTypeVariables(tree.typarams, baseEnv); |
| 905 | |
| 906 | chk.checkNonCyclic(tree.pos(), c.type); |
| 907 | |
| 908 | // Add default constructor if needed. |
| 909 | if ((c.flags() & INTERFACE) == 0 && |
| 910 | !TreeInfo.hasConstructors(tree.defs)) { |
| 911 | List<Type> argtypes = List.nil(); |
| 912 | List<Type> typarams = List.nil(); |
| 913 | List<Type> thrown = List.nil(); |
| 914 | long ctorFlags = 0; |
| 915 | boolean based = false; |
| 916 | if (c.name.len == 0) { |
| 917 | JCNewClass nc = (JCNewClass)env.next.tree; |
| 918 | if (nc.constructor != null) { |
| 919 | Type superConstrType = types.memberType(c.type, |
| 920 | nc.constructor); |
| 921 | argtypes = superConstrType.getParameterTypes(); |
| 922 | typarams = superConstrType.getTypeArguments(); |
| 923 | ctorFlags = nc.constructor.flags() & VARARGS; |
| 924 | if (nc.encl != null) { |
| 925 | argtypes = argtypes.prepend(nc.encl.type); |
| 926 | based = true; |
| 927 | } |
| 928 | thrown = superConstrType.getThrownTypes(); |
| 929 | } |
| 930 | } |
| 931 | JCTree constrDef = DefaultConstructor(make.at(tree.pos), c, |
| 932 | typarams, argtypes, thrown, |
| 933 | ctorFlags, based); |
| 934 | tree.defs = tree.defs.prepend(constrDef); |
| 935 | } |
| 936 | |
| 937 | // If this is a class, enter symbols for this and super into |
| 938 | // current scope. |
| 939 | if ((c.flags_field & INTERFACE) == 0) { |
| 940 | VarSymbol thisSym = |
| 941 | new VarSymbol(FINAL | HASINIT, names._this, c.type, c); |
| 942 | thisSym.pos = Position.FIRSTPOS; |
| 943 | env.info.scope.enter(thisSym); |
| 944 | if (ct.supertype_field.tag == CLASS) { |
| 945 | VarSymbol superSym = |
| 946 | new VarSymbol(FINAL | HASINIT, names._super, |
| 947 | ct.supertype_field, c); |
| 948 | superSym.pos = Position.FIRSTPOS; |
| 949 | env.info.scope.enter(superSym); |
| 950 | } |
| 951 | } |
| 952 | |
| 953 | // check that no package exists with same fully qualified name, |
| 954 | // but admit classes in the unnamed package which have the same |
| 955 | // name as a top-level package. |
| 956 | if (checkClash && |
| 957 | c.owner.kind == PCK && c.owner != syms.unnamedPackage && |
| 958 | reader.packageExists(c.fullname)) |
| 959 | { |
| 960 | log.error(tree.pos, "clash.with.pkg.of.same.name", c); |
| 961 | } |
| 962 | |
| 963 | } catch (CompletionFailure ex) { |
| 964 | chk.completionError(tree.pos(), ex); |
| 965 | } finally { |
| 966 | log.useSource(prev); |
| 967 | } |
| 968 | |
| 969 | // Enter all member fields and methods of a set of half completed |
| 970 | // classes in a second phase. |
| 971 | if (wasFirst) { |
| 972 | try { |
| 973 | while (halfcompleted.nonEmpty()) { |
| 974 | finish(halfcompleted.next()); |
| 975 | } |
| 976 | } finally { |
| 977 | isFirst = true; |
| 978 | } |
| 979 | |
| 980 | // commit pending annotations |
| 981 | annotate.flush(); |
| 982 | } |
| 983 | } |
| 984 | |
| 985 | private Env<AttrContext> baseEnv(JCClassDecl tree, Env<AttrContext> env) { |
| 986 | Scope typaramScope = new Scope(tree.sym); |
| 987 | if (tree.typarams != null) |
| 988 | for (List<JCTypeParameter> typarams = tree.typarams; |
| 989 | typarams.nonEmpty(); |
| 990 | typarams = typarams.tail) |
| 991 | typaramScope.enter(typarams.head.type.tsym); |
| 992 | Env<AttrContext> outer = env.outer; // the base clause can't see members of this class |
| 993 | Env<AttrContext> localEnv = outer.dup(tree, outer.info.dup(typaramScope)); |
| 994 | localEnv.baseClause = true; |
| 995 | localEnv.outer = outer; |
| 996 | localEnv.info.isSelfCall = false; |
| 997 | return localEnv; |
| 998 | } |
| 999 | |
| 1000 | /** Enter member fields and methods of a class |
| 1001 | * @param env the environment current for the class block. |
| 1002 | */ |
| 1003 | private void finish(Env<AttrContext> env) { |
| 1004 | JavaFileObject prev = log.useSource(env.toplevel.sourcefile); |
| 1005 | try { |
| 1006 | JCClassDecl tree = (JCClassDecl)env.tree; |
| 1007 | finishClass(tree, env); |
| 1008 | } finally { |
| 1009 | log.useSource(prev); |
| 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | /** Generate a base clause for an enum type. |
| 1014 | * @param pos The position for trees and diagnostics, if any |
| 1015 | * @param c The class symbol of the enum |
| 1016 | */ |
| 1017 | private JCExpression enumBase(int pos, ClassSymbol c) { |
| 1018 | JCExpression result = make.at(pos). |
| 1019 | TypeApply(make.QualIdent(syms.enumSym), |
| 1020 | List.<JCExpression>of(make.Type(c.type))); |
| 1021 | return result; |
| 1022 | } |
| 1023 | |
| 1024 | /* *************************************************************************** |
| 1025 | * tree building |
| 1026 | ****************************************************************************/ |
| 1027 | |
| 1028 | /** Generate default constructor for given class. For classes different |
| 1029 | * from java.lang.Object, this is: |
| 1030 | * |
| 1031 | * c(argtype_0 x_0, ..., argtype_n x_n) throws thrown { |
| 1032 | * super(x_0, ..., x_n) |
| 1033 | * } |
| 1034 | * |
| 1035 | * or, if based == true: |
| 1036 | * |
| 1037 | * c(argtype_0 x_0, ..., argtype_n x_n) throws thrown { |
| 1038 | * x_0.super(x_1, ..., x_n) |
| 1039 | * } |
| 1040 | * |
| 1041 | * @param make The tree factory. |
| 1042 | * @param c The class owning the default constructor. |
| 1043 | * @param argtypes The parameter types of the constructor. |
| 1044 | * @param thrown The thrown exceptions of the constructor. |
| 1045 | * @param based Is first parameter a this$n? |
| 1046 | */ |
| 1047 | JCTree DefaultConstructor(TreeMaker make, |
| 1048 | ClassSymbol c, |
| 1049 | List<Type> typarams, |
| 1050 | List<Type> argtypes, |
| 1051 | List<Type> thrown, |
| 1052 | long flags, |
| 1053 | boolean based) { |
| 1054 | List<JCVariableDecl> params = make.Params(argtypes, syms.noSymbol); |
| 1055 | List<JCStatement> stats = List.nil(); |
| 1056 | if (c.type != syms.objectType) |
| 1057 | stats = stats.prepend(SuperCall(make, typarams, params, based)); |
| 1058 | if ((c.flags() & ENUM) != 0 && |
| 1059 | (types.supertype(c.type).tsym == syms.enumSym || |
| 1060 | target.compilerBootstrap(c))) { |
| 1061 | // constructors of true enums are private |
| 1062 | flags = (flags & ~AccessFlags) | PRIVATE | GENERATEDCONSTR; |
| 1063 | } else |
| 1064 | flags |= (c.flags() & AccessFlags) | GENERATEDCONSTR; |
| 1065 | if (c.name.len == 0) flags |= ANONCONSTR; |
| 1066 | JCTree result = make.MethodDef( |
| 1067 | make.Modifiers(flags), |
| 1068 | names.init, |
| 1069 | null, |
| 1070 | make.TypeParams(typarams), |
| 1071 | params, |
| 1072 | make.Types(thrown), |
| 1073 | make.Block(0, stats), |
| 1074 | null); |
| 1075 | return result; |
| 1076 | } |
| 1077 | |
| 1078 | /** Generate call to superclass constructor. This is: |
| 1079 | * |
| 1080 | * super(id_0, ..., id_n) |
| 1081 | * |
| 1082 | * or, if based == true |
| 1083 | * |
| 1084 | * id_0.super(id_1,...,id_n) |
| 1085 | * |
| 1086 | * where id_0, ..., id_n are the names of the given parameters. |
| 1087 | * |
| 1088 | * @param make The tree factory |
| 1089 | * @param params The parameters that need to be passed to super |
| 1090 | * @param typarams The type parameters that need to be passed to super |
| 1091 | * @param based Is first parameter a this$n? |
| 1092 | */ |
| 1093 | JCExpressionStatement SuperCall(TreeMaker make, |
| 1094 | List<Type> typarams, |
| 1095 | List<JCVariableDecl> params, |
| 1096 | boolean based) { |
| 1097 | JCExpression meth; |
| 1098 | if (based) { |
| 1099 | meth = make.Select(make.Ident(params.head), names._super); |
| 1100 | params = params.tail; |
| 1101 | } else { |
| 1102 | meth = make.Ident(names._super); |
| 1103 | } |
| 1104 | List<JCExpression> typeargs = typarams.nonEmpty() ? make.Types(typarams) : null; |
| 1105 | return make.Exec(make.Apply(typeargs, meth, make.Idents(params))); |
| 1106 | } |
| 1107 | } |